From Autumn 2003 to Spring 2004, over two million people visited artist Olafur Eliasson’s now iconic installation at Tate Modern, The weather project. To mark its 10th anniversary, Studio Olafur Eliasson is collecting material to create an archive of responses to this artwork. Use #weatherproject to share personal photographs or videos of the work via Twitter or Instagram, or simply use the tag and tweet your memories or reactions.

Celebrate the sun: share what belongs to all of us.

Join Studio Olafur Eliasson and the Guardian in this project, no matter where you are. Simply capture a video or photograph of the sun – rising, setting, or at any time of day – and share it with the tag #shareyoursun via Twitter or Instagram, or use the Guardian Witness app. Together, these films and photos show our shared revolution around the sun. Share your sun to make our shared motion felt.